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(3) RS-422/RS-232C serial interface selection
Select the RS-422 or RS-232C communication standard. RS-422 and RS-232C cannot be used together.
Parameter No. 16
−
− −
(4) Communication delay time
Set the time from when the servo amplifier (slave station) receives communication data to when it
sends back data. Set "0" to send back data in less than 888 s or "1" to send back data in 888 s or more.
Parameter No. 16
− − −
Communication delay time
0: Invalid, reply sent in less than 888 µ s
1: Valid, reply sent in 888µ s or more
(5) Serial communication time-out
No communication for a given period of time between the master and slave stations may be judged as
a communication cable or master station fault to stop the servo motor.
Setting
0
No time-out check
Time-out check period setting
1 to 60
Check period
8.3 Protocol
Since up to 32 axes may be connected to the bus, add a station number or group to the command, data No.,
etc. to determine the destination servo amplifier of data communication. Set the station number to each
servo amplifier using the parameter and set the group to each station using the communication command.
Transmission data is valid for the servo amplifier of the specified station number or group.
When " " is set as the station number added to the transmission data, the transmission data is made
valid for all servo amplifiers connected. However, when return data is required from the servo amplifier
in response to the transmission data, set "0" to the station number of the servo amplifier which must
provide the return data.
(1) Transmission of data from the controller to the servo
S
Controller side
O
(Master station)
H
Servo side
(Slave station)
RS-422/RS-232C communication standard selection
0: RS-422 used
1: RS-232C used
Description
setting (S)
S
Data
T
Data
No.
X
Station number
or
group
10 frames (data)
E
Check
T
sum
X
S
T
X
6 frames
Positive response: Error code A
Negative response: Error code other than A
50
Station number
or
group
E
Check
T
sum
X
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